Hello All, It feels great to be back with an interesting topic around duplicate detection and approaches. Duplicate detection is essential to maintaining data integrity and quality in any system and when it comes D365 though there are multiple options to achieve this we are going to concentrate on the following four 1. Duplicate Detection Rules Duplicate detection rules are out of the box way to manage duplicates. The same can be configured at the UI level. Not enforced and users can override optionally Works within current users access, so there is a chance that duplicates beyond current users access are not considered Needs to be specified explicitly while creating records via OrgService/WebApi 2. Alternate keys MSCRM alternate Keys are handy in performing duplicate detection and the alternate keys are primarily used for simplifying Integration and Migration activities. Beyond that, it implements a unique constraint for one column or combination of columns. Robust and applies across... Read the full text.